{
  "manageEntity": {
    "action": "Save",
    "entityId": "1756957080",
    "entityType": "Track",
    "nonce": "0x82cdf3b011a5b6d3d6647577931dc20bed65b4be75f3374179a0434d0b787826",
    "signature": "0x1e3caba256bb9e5d4b506c277a7dd0a3df14cdea8dc542ad6e2eaa385ef6e45b3a6dae39113da15e0b875d7a2818a4a2a6ae63d586187ccd9ec549a0235bf7061c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}