{
  "manageEntity": {
    "action": "Save",
    "entityId": "1191082168",
    "entityType": "Track",
    "nonce": "0xad13cdbf45c412098656544b4b3b2ae797320565cfd4db2197c5bf96e519f95d",
    "signature": "0x412a62d9d960b88618c2f13bbb3eab8db793a8794ffa7bad97c2aadea9d1dc860eb7246059270f2a3131703928f14ccc1594b3edc7d7f171e899499416d159011b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}