{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174276014",
    "entityType": "Track",
    "nonce": "1792448117644691126",
    "signature": "0x51b8af9003ef537dbb376131fbfa432eae4b77a8bd587a1921617ae34981a23019dd637fb4c4b080f02a4bf055dbf681510f624fd9edd13d115c521f673987b01c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}