{
  "manageEntity": {
    "action": "Save",
    "entityId": "1356707217",
    "entityType": "Track",
    "nonce": "0xa3ea24899ad02e3ac995fd8fd96d71d9fc857df0d9cb8b7c444657dea4381b2b",
    "signature": "0x1bc04aef0036d79b5cecf8d4a19822962575aaf2983d0735e95844f0393f82d90ab0e338edcd2cbfa9529cf31ae31c30abe59720cbed8ae322af27247c36566f1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}