{
  "manageEntity": {
    "action": "Update",
    "entityId": "530486745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf689d2efaf5d0b61ce6ea66a4dec9cf1de963ae5d4d05bf2aaef1d6790a88934",
    "signature": "0xd96df2ddb1fdb139d4f308a36d3c62551f676587b74d45fabb325e6946eed3504550c1c58537ff5888b1d2e4cf3cadf3347cd3cacac3a9499e9b20a9b2793d0b1b",
    "signer": "0x3A8886266000f8EE9c2710f26D48Fe779Ea52121",
    "userId": "530486745"
  }
}