{
  "manageEntity": {
    "action": "Save",
    "entityId": "1131889766",
    "entityType": "Track",
    "nonce": "0x7e0be2b50469791f9bebbf52492b815ef431a009591d8e02d980abc4c4a74e2e",
    "signature": "0x60dfd19aa76bea90c80d87426e2b880d4de849d4b3ec9a245b74fe0e4b71a8f81182318b8feb3b17ee6e71883b183ed5d394ccf991b76dae23ae82c2984e61021b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}