{
  "manageEntity": {
    "action": "Save",
    "entityId": "81832684",
    "entityType": "Track",
    "nonce": "0x3ce7c6787aefa588f2675931ab17c94f3d1aa556a591f61176e5275d97e89f71",
    "signature": "0x80a49732efdc53cfd00d63d31be85e8fadd4a7f9c4398a9c2894ac26bb0d93e7205e98c33b9f25ec3627addf44104d867d94e079abe413bfff9623466d2c69051c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}