{
  "manageEntity": {
    "action": "Save",
    "entityId": "1323695055",
    "entityType": "Track",
    "nonce": "0x6e8c840d22b74024687c2e23df1a4efa20a220d76308d14b6115766ed238ac6f",
    "signature": "0x317b54fb6763fa53ba9eec6afadd390999c4c3db303bb34cfaf9554117cd5fc143dffd6d1d8c53e1b855918fec7d57b9f50c1ff9a8024bb28e92876f5005173c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}