{
  "manageEntity": {
    "action": "Save",
    "entityId": "1015470358",
    "entityType": "Track",
    "nonce": "0xfddfd9691a4dac0a78775d0fc41b67d4f28bb2c963818ea59702f0a33ed2ec70",
    "signature": "0x142688ef5e2dbb31f69be5dea5f1e48adb7bc38a9e9108c1b33821915aecbe56652aaba82b634cc647da84c3c33c3bee931f134b5ae631119ede55d09fbb6a761c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}