{
  "manageEntity": {
    "action": "Save",
    "entityId": "127394241",
    "entityType": "Track",
    "nonce": "0x7a5eb66836a98d9be757b81944f97eea62e098d3d70e3b87c61ff63ac48a1ebd",
    "signature": "0xce92aecd9f3f99f20fbad880353d7a8e8bf96a7cd75621501503f382a04eee9f27eac8f416975cb126d1db8201c72a3c02e769957af296533664730fa608ca081b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}