{
  "manageEntity": {
    "action": "Update",
    "entityId": "757411767",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfb89814993de8441577fbb6a54c5251d6cabb79123839478c935eebfaec2914b",
    "signature": "0xa7cf1537b5efec0814b712a20a1fc65a3d8061e06fd0abe831d52cf2f46e35295d7ae270234869ccc1df139fd42f8a6c83426b69f3df07d2f837797a89c5091b1b",
    "signer": "0x53A4E185DAc7588016d96A25812E58A956DeBA9C",
    "userId": "757411767"
  }
}