{
  "manageEntity": {
    "action": "Update",
    "entityId": "15311344",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xef5d2aad641c4647355fd0105cfa432b912e4f168b725be6113fa34ad678d6fd",
    "signature": "0xe9395d4c4527c8d9225884ce3ba675ca2568274b322d675fb5a467530424f25137ae25a80f45761f034a1312dbbf1c6deca9a3ec14c362f34ff419bd09576e661b",
    "signer": "0xB748A01B1Cf21B9A3060a8b7bbEFe5AF5127d2cB",
    "userId": "15311344"
  }
}