{
  "manageEntity": {
    "action": "Update",
    "entityId": "524597900",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdb2878b4e966288b81b800476c95f8a8ca080ad91b7791066edabbf829702ab2",
    "signature": "0x0961c71600c2f73327f2aafdc8b8dd343302090267a32acb3ece3bcc447bba831f47fca2f320a40fa923fa06202dcc342c65c067d78dbdea3819205f1af2a8f01b",
    "signer": "0xAcB0d7BF9562f1b7E47e8B21B8977EEf64Fa901A",
    "userId": "524597900"
  }
}