{
  "manageEntity": {
    "action": "Save",
    "entityId": "1693320594",
    "entityType": "Track",
    "nonce": "0x9cb87a5f64b30d43dfd9c7002a625a5ac2915d375cbbdefaf96cababc97252ae",
    "signature": "0xb860ecb85e27f3de253953be325bdea6b2fc6d388e1bbcf73e143282ce19211440de174b539245db7f05aae6db461a4f41993619e9165ce61a91b02733f76e6e1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}