{
  "manageEntity": {
    "action": "Save",
    "entityId": "101052",
    "entityType": "Track",
    "nonce": "0x8194467ba79be78941e5d36fd7c3a1b2eb5950b658436f6a7825e0a727630996",
    "signature": "0x2fb9b0c65d46404a2a835d251127fbb4b285d259e0971e3485fb9801bf3ec67570287f64a0d47e251b0793947910f46a320e2a45042c562b648a6d9f74e081c01c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}