{
  "manageEntity": {
    "action": "Update",
    "entityId": "428941685",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc567449d5541329dc5ea856986567bfdd3ba2c1562a08e2028153f1b6e7a759c",
    "signature": "0xb300946b13771336d29edbbf1c85a778d5e8e6dd0e4c7d2a90c3b91a19d5d1f14b8c0642c0ad85a926d7e613367545df6f9642ceea3a76a3278d00732ec715dd1b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}