{
  "manageEntity": {
    "action": "Save",
    "entityId": "2076076574",
    "entityType": "Track",
    "nonce": "0xb14014971c3644e7373698fda287018c9aa529fefc7f0c5b16e93ef46635c308",
    "signature": "0xa67ace63374fc2453f0d3aa76eb11224080c6fc437e18f656f787d368e848eed1a4069823cff88cc79be0d088c26eade179c8e217370b48eaab7f3371964c8e11b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}