{
  "manageEntity": {
    "action": "Save",
    "entityId": "236139",
    "entityType": "Track",
    "nonce": "0xb9de1d86e8f5bc8880fb82d144eee4931d7c5f23ce8a658622816b22414113cf",
    "signature": "0x0dfde45fa898d2baca5a046de5343687dd0a75fc02ae2618c6876ffcc0190268490570f9308bce2c9cd5554e5c36d1dec4c4549642f4cdb15b64daae6d7746121c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}