{
  "manageEntity": {
    "action": "Save",
    "entityId": "1336061539",
    "entityType": "Track",
    "nonce": "0x1fb0faff61dcd04317b387e650f31dda2696e05e8d1c3be7146fcd21f7c2a6c4",
    "signature": "0x07b6b038337a66f1296e3fcc29de47b9417d2f4c16ea16332b8645f241d37c172e8e44cda6290d02f81b50b4a86eb728ef3359ddb7baa7a4ae895002cabe7b981b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}