{
  "manageEntity": {
    "action": "Save",
    "entityId": "1579083918",
    "entityType": "Track",
    "nonce": "0x1a80a044b2d876452f83673f5806083cc2c79dde4f381d71eaa0c4320ed0fd6f",
    "signature": "0x7dbb1dbcc5db369e2c86d43a52bf01a4083e2c983525c74b1edc36e97ffc514c2d73d2976403ce67b81949396fbf495a841bff29638d8c1efb66b44848f743d21c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}