{
  "manageEntity": {
    "action": "Save",
    "entityId": "482289644",
    "entityType": "Track",
    "nonce": "0xc2de264d207ff309d97846ad8a6c5fe6fb61a02feaf0ea8e5181594cd2b9d27f",
    "signature": "0x735f18c65c21a2986a65c495b49bbfc7b1357dcacbdf92311ba702e662a905134ef79d8057068abb7c946bf78b3149c64b04c27f9ba2acb6e2341fb8d076e48b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}