{
  "manageEntity": {
    "action": "Save",
    "entityId": "317342",
    "entityType": "Track",
    "nonce": "0x94c514a1fb6ffde17503263ae1ee05d090bc550b2fd962de2a9fa316eab18564",
    "signature": "0xfe411dd09775de567b38fd79705ac1a345bb3a25c34c4eba492a06496baffa540f439fb19f450dd11949b6acbcdd23070a5efb7ec8731d8ed9241912007765ee1b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}