{
  "manageEntity": {
    "action": "Save",
    "entityId": "1442677224",
    "entityType": "Track",
    "nonce": "0xa5342946a36c082405f5ec30961edd8de499f13ee77e9ea563062d86d8264c19",
    "signature": "0xe9372c08b6f4793c332d01666e1e1de576008359c7dd8b53a47b48345cbf15df41bab58998aace520ccd92c37e79e7adb82cba097dfeca9215e421d6474de2951c",
    "signer": "0x4B8960b62360073E2472A74bfbd80138387fE211",
    "userId": "86339"
  }
}