{
  "manageEntity": {
    "action": "Save",
    "entityId": "367018",
    "entityType": "Track",
    "nonce": "0xe805383f575a4604f7958f49d985b311f39f39111b44de323ec153e68162ebc9",
    "signature": "0x30bdf8d24c5cb03834bfdb2f7f5c8c372c3c94cd9e355480c1ea4bf8533aacf11a67dce57a4935c9d90e0f4ff3e59bf23dd1828531be8a66c2733b6d259fb3771b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}