{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094311",
    "entityType": "Track",
    "nonce": "0x46264145b1e434b23fe412aa1f4a83e91ebb683d5be6eb26bbbdd7817c659b79",
    "signature": "0xf0d24cef1cef638d774232f18a486f8e8dd9487730c4730fc977b392f4eebf913a91b90443de9f343675a6ba5dc110a44f2a7e1e849b2cd60409dc6a6ad2a2f61b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}