{
  "manageEntity": {
    "action": "Save",
    "entityId": "1012076127",
    "entityType": "Track",
    "nonce": "0xfd08e0e28be8a8e3683f7f07b3fbad22b423dc9f526d8fd33683d2f18bf581d7",
    "signature": "0xe6920d3368619b418aa7e672d2e8f89e4811f82a16279b571633d833c75203540b9948455d3c58f34ad19268747d73f2d47682fc9fc36e6a22b7b51f299c7da31b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}