{
  "manageEntity": {
    "action": "Save",
    "entityId": "1061847",
    "entityType": "Track",
    "nonce": "0xb7aed6ab35b33b38e0984ff8bf9b8d5e792dddfc25d92fcd66505784f634764f",
    "signature": "0xae0c96162432ab61379959f50017722dd169c978c3f344b1f81e86ffb28e3e566e7856320c41dc6c04e3cc792c590f23528bb4cbbc912c6401883637b8c3ba8a1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}