{
  "manageEntity": {
    "action": "Save",
    "entityId": "1364216253",
    "entityType": "Track",
    "nonce": "0xcdcacad9327b36d5bbbe2fe840c2cd7b294385f6cc0cc6ce56729a9de32eedbd",
    "signature": "0xe8ba98fdaa2243a3de1f42b668b7ec4e6394632dea31820719629849acbd82130bbcd9fede5fe4e4a64411aec22821876ea930297727e03be07b72a819efc0391c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}