{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb17e2cee25a654c4cdac9cfb2effbe484662fb91f31d248d6f1ce4555aa94464",
    "signature": "0x6c24c73d102ae962a8677d106cf9e71c220a6505eaac00dd73eb962ccfa4d8b771187db61351a878f3190b40c6af279b793507d7e628d7e48b160f8825b8203c1c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}