{
  "manageEntity": {
    "action": "Save",
    "entityId": "1713374251",
    "entityType": "Track",
    "nonce": "0x1ed74b7977270771d1e41a950273021b4d7f5e37aa585453b9df0e9622ef3b6c",
    "signature": "0xb009e7dcb247106cc63cca40b5336a36be5b7bac5d5a2ce66992cbd46c190f9f4c2dd87e41ef2869696857e62fc2b2a35e17f7f1ad637386c7e197cddb369b6d1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}