{
  "manageEntity": {
    "action": "Update",
    "entityId": "501224594",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe672008f6a52e936b329a6e31143560e1db29368e1206cd85a1cdd36d0a5f454",
    "signature": "0xa86b962461c26f774d2def87de76aeb0bff4ad06b660dfa9544f71c7d992b58156d9f8640ed641382db2e7ee151a226fcd31e28b2dabb89285be49596b73a1671c",
    "signer": "0x04d2AeF69165e1c1d73288e89Bf7e0Bf14608308",
    "userId": "501224594"
  }
}