{
  "manageEntity": {
    "action": "Update",
    "entityId": "620921422",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierax77h2rkpccidjropnpnrddg2gvycsds6kc3yacseunevv6t5m5eq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1712365028},{\"type\":\"playlist\",\"playlist_id\":145520179},{\"type\":\"playlist\",\"playlist_id\":1595469811},{\"type\":\"playlist\",\"playlist_id\":1456997187}]}}}",
    "nonce": "0xf78c8d069542e13a8dd16617527e402af7598c33664a35e3c9a6666f4d2d2c39",
    "signature": "0x4fc9a74dad8809a6c3e601b38435b4b15c432c5998666ab52d8ceb1e745c13911682b75f85650a95d7efe0e576499d53a9c6901b0a5a4b0f2adcc0de9d634d991c",
    "signer": "0xdfcc4d06D5B8A0AF1AF77B1Ec434e5F50B625a75",
    "userId": "620921422"
  }
}