{
  "manageEntity": {
    "action": "Save",
    "entityId": "428402",
    "entityType": "Track",
    "nonce": "0xa09a13c0f2b82aab93fcb6e43090ff83871ac7735c4b13e38be4759850e62d9d",
    "signature": "0x4f8b3c7233a6458f710bcb3186658964acf4bf55eb0a099af05a991b80fe632e08945e44ff21a60c04391273a4ecf3593d560ce1ef3044b49442e8e92045c7741c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}