{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026073",
    "entityType": "Track",
    "nonce": "0xb53fb3bd8d11b4e7d967f6f964fbc1ac746b79889e286dc9a6ae340e220eb676",
    "signature": "0x374d9338de0cab9313a255379e438502399071606d8750c86d90ff5ba377f894529e9be8d57934ca9a864c80c40f4dd06c0d09a116548757c097b82a3d0b379b1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}