{
  "manageEntity": {
    "action": "Save",
    "entityId": "932146895",
    "entityType": "Track",
    "nonce": "0x81fbe87a18e09082a87573e4e2273e68ccce00a7d56fd0089848cf5c9ec1a3df",
    "signature": "0x3901679b4de4ef64312b887c04d872c88daed85fdfef62bd5accdc27f210f1fa2b19bb06ad9851f26aaa5b4f277e5171d2ba7a1244e6bef7dc80333d95ace64b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}