{
  "manageEntity": {
    "action": "Save",
    "entityId": "1704275936",
    "entityType": "Track",
    "nonce": "0xbb4449043fb61de95fbc10c8e65a673f60bce17911f4196e06117e9b4d9eb3f3",
    "signature": "0x14e16c9a7fc550183013538376ef1d51a729a590e6715806f22a5be6d924c2340c5a87beafe2f3e60baa281f853529250b83a383893619bdf2482d277e64a4911c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}