{
  "manageEntity": {
    "action": "Save",
    "entityId": "1097887165",
    "entityType": "Track",
    "nonce": "0xda6955fba34e0e84d544a7a2cc07c59cf7167c23f433a51d09494b4c56b81a48",
    "signature": "0x61fc672b641eba10d0c79490cde6e6fda9f9679f57343d9bedb01d9361ecfbeb727af1f8882e1100271ce0ff7192e9e777a68d888d49c84290314cad82d168fd1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}