{
  "manageEntity": {
    "action": "Save",
    "entityId": "197155",
    "entityType": "Track",
    "nonce": "0xaa8619aeeb9202ad94ef9ccec3a618f8b049509864d7cc5db694d146ef351d74",
    "signature": "0xc56681b6f7e9a35700378af8e82610d4662acab2674ebbc6c670e4119cb0bf9a182dd8be1bce7ca73be957eb7f460ad5eb6cf63cd28678c9ae19b20730f168e91b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}