{
  "manageEntity": {
    "action": "Save",
    "entityId": "93262",
    "entityType": "Track",
    "nonce": "1790221150443802755",
    "signature": "0x6ca2644481a94acbd73752dc2ef41932e31cbdb83d1f742af95b3055c811c3632d58b17af8b6e396cfdeef53744583f5c7b4fa4bcf5bfa25feb3171084f6710b1c",
    "signer": "0xF1f4D1515EDE23445C949c6a8dBaE8a064153588",
    "userId": "199729601"
  }
}