{
  "manageEntity": {
    "action": "Save",
    "entityId": "1752181087",
    "entityType": "Track",
    "nonce": "0xbd31c57cd4aa3c93717bb88afb515c4572cff1464a0f9e888da74b5a8f39821c",
    "signature": "0xbdf142bac2f9dbedb9534183881c3e0ea9126c470155eeb002950a2c10dfcc7f6ab5fd82fc712686933b37068fbd31e5a2f8588bbe9dc4a4abcc9fc4f9cc98121c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}