{
  "manageEntity": {
    "action": "Update",
    "entityId": "298948042",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7c155c1d20b5cd5199382fd24c86cec93abeae4ba6d5e4f807c3c54d0081b7ef",
    "signature": "0x8bbfc6031d7625c611d240c77c201b7d8e54311d6ce1b78e0c374f7f994845d50397dc6ce2fc36872687da1a10555151b83457b98ac0073f78c0cf9001f3f9de1c",
    "signer": "0x594d79756bF4fA4c6950fAA89479781792F6e656",
    "userId": "298948042"
  }
}