{
  "manageEntity": {
    "action": "Update",
    "entityId": "556059564",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x189c89dcd1b766fb08fd06992a4f17e4f53c62b282b1c62b1be2c195ce753320",
    "signature": "0xf6fc06c6cbc879bf35e3fbc3c265c2d8aee72ca623965e027145bbd943f91c5963dc56b38c3da61993ff516262ea21d9e517e5cccd99358f9f7e0803b0e54be01b",
    "signer": "0x67801FC7F7b4643FF9A2072b86D99e63A0bb2CfB",
    "userId": "556059564"
  }
}