{
  "manageEntity": {
    "action": "Update",
    "entityId": "816241514",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0b475ac3acf85d026cdb991440a4a6a95fed78b4841a3302fbaeb5480236884b",
    "signature": "0x67a905e440073cd6f7b56fce739cd73aca6e5034e48a945465c7cfbc9a7a23453f1ab73d5dbcbd1095529e735f0df3c351ad361d7e1d3243cf350e8a68cc43d61c",
    "signer": "0x4AD1829e273b8aaA748a011e03b9d1A1f6e4166e",
    "userId": "816241514"
  }
}