{
  "manageEntity": {
    "action": "Save",
    "entityId": "359013960",
    "entityType": "Track",
    "nonce": "0xe209f1eea864a92500499224cf86ab80b33bb901cc818e1bdd7c79b6222fc87d",
    "signature": "0xbab19d1a66df7e80ba02a27bd99497669fe028b55327490800762c48dbaa9284429b0a69fa533af6519442f41edc01069877368dd83d2f401623af9a9c6636481c",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}