{
  "manageEntity": {
    "action": "Save",
    "entityId": "1206304230",
    "entityType": "Track",
    "nonce": "0xdf541f81528ae3ddaa9b7bfe04a4e7151f661e6fa293c13eb81851d519b21f4f",
    "signature": "0x101aa05541b012bc812358d3bf0803611ca10ad546d8b0a790591593d67c368370bd7bb25ca3f36609ea4d13b16eb85e4477433153e0fccbd772e305647666e71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}