{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825209037",
    "entityType": "Track",
    "nonce": "0x138c08a80c0f1b4ef3e2b3d34b23c661e3712a21e562562fc7216edef5855886",
    "signature": "0xc55b93ff46575bc1de7c0051a77f687cb08af51b4cd1fda960523938082c05e455d254aa1d2cff4ffd96f3003c8103a6267cdf67e5dcea42e4752b6f0bb782e51c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}