{
  "manageEntity": {
    "action": "Save",
    "entityId": "1412798163",
    "entityType": "Track",
    "nonce": "0xc3ebf76009487e7b23698f0451e5ae2af546745c71520eda076d29f56540e225",
    "signature": "0x0637919bdea28604b6036e9f864d925faaef87dfee285566a6d9553cf1c1a501150c8dd5500a0eb64f8901a12a849850ffa69ecfcb86c59bef66c96dbce27c861b",
    "signer": "0xe9B3548997c57545A6352D16A021F6df1a01747f",
    "userId": "616597835"
  }
}