{
  "manageEntity": {
    "action": "Save",
    "entityId": "161124151",
    "entityType": "Track",
    "nonce": "0x38cbc7990dfcedaf8a7192779bec665b2ae2f9da6999c86a93ca98dc3a2bee7d",
    "signature": "0xd197e3484559fd3145e6aec954c0df91d5dd1afac69541bdbe2faaee399facd2734e0e9c60ae7027e75acf07b3f73854563a3ab2049dcf39479580bd0fdbc8fb1b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}