{
  "manageEntity": {
    "action": "Save",
    "entityId": "1678541368",
    "entityType": "Track",
    "nonce": "0x35777369b91844cc03bdeab3e4486a5a223efe8b4251e9350e0f5e9923fb9dc2",
    "signature": "0x82fecad16aabb4c5ebc980babd78fffb9e619fc750b952dcd88511b3f53bb9944d9fe24b1580af1851fd51fa996b939a3663119da072a1b94fd21d26ccd986721b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}