{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791278497",
    "entityType": "Track",
    "nonce": "0xa382bcd309423fbc4a7294570f0b3d22948d5e3311641936008386e0238d550a",
    "signature": "0x757189b029f520c3b08a40f56275f0b3308ee17e19f2841285fdac00d47e3ab23e71c75d63570f27ec237cdcc7bcb4da395bf5f9d228efc2878bb5b91fa3cf811b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}