{
  "manageEntity": {
    "action": "Save",
    "entityId": "1797388967",
    "entityType": "Track",
    "nonce": "0x8ab217aa02c4896c2eb1e95c03981af57fcd14088053f407477c1e8d27415a27",
    "signature": "0x83a77b683f3bbac817390dc117e4ee0428318fdc0a4e9b792bce7cc74340c48b5842d898130c03bc782f67de36841c94ff8fe863de39cd98387f03ca57bda3351b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}