{
  "manageEntity": {
    "action": "Save",
    "entityId": "1472770768",
    "entityType": "Track",
    "nonce": "0xdf5028b94638f8677e23e7c6cd5da862ddcf8b05a76148aeb53eb1c13d8d9539",
    "signature": "0x09f63ba7bf036c39c667a8a38575689584d73033dd99266130c210164bd7a7b73daf8dc6b06f082247c4734d97a2d463d6efdde76f2ea6340bba4124efb0307c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}