{
  "manageEntity": {
    "action": "Save",
    "entityId": "1121247170",
    "entityType": "Track",
    "nonce": "0xa71b0b6929508c426ebc56c9cf8700999574af0d21a232875a6594c8bcfd859a",
    "signature": "0x4825348b7db7e691005d9831c67af4051b0359d2ba11322d6baa6fbeeeae10cf506b25f845cdc8dcf9658806bcee7283a0116b114983ea359960f558fefde1541b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}