{
  "manageEntity": {
    "action": "Save",
    "entityId": "55506",
    "entityType": "Track",
    "nonce": "0x271659b6aab76909e40bbd320898d033afe582912dd1d6b2b28658c4d205b466",
    "signature": "0x7ff1ec2743458eb83305a4cc71e17f24a1898edb3d67ac0f0ae1dfce70e9b1a82a39ed5713078c4ccfe36565564d2b807681714ca2307361df50f3519db8f9ca1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}