{
  "manageEntity": {
    "action": "Update",
    "entityId": "952196459",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x73b6e517ac59810833458d47e3f74a0e19707f25cdd3726628105715963e47bf",
    "signature": "0x5361dfeab61cf2803b0a7144b7aa137c8493e42ede9a2b27a8ce60f13d8124745c30e9e980fcc4cd120d56762e0cbc484e882ca9b0d0a1fbd7a90f882bca60151b",
    "signer": "0x89715A6F0c23C84cE71166083899D25bE26BfBC1",
    "userId": "952196459"
  }
}