{
  "manageEntity": {
    "action": "Update",
    "entityId": "559710456",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xba43813bed546a337d5299af9aca5e863eb8873b2edbfe5165c7882c2215ea00",
    "signature": "0x8178812320bd58c275df46b610cd827f20034c04f195d0aff36f5f745ffd8d5819947edd79c79591df599a4798a822c466dbd8018398e986147fb1859a08e2741b",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}