{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114632892",
    "entityType": "Track",
    "nonce": "0x3f5fa0c623f850a1188d919c02234ca23ec2dbd2bb914eceab70d1b7f4bd7817",
    "signature": "0x856d293f08b63cad36b5b8f9ae33d92d02fd4d98739b4cbfbf2595d39e1f525e47eace3cc7e9d3e791a1c0b3bfea823ec011ea674de4d04acc43229f84b2a5711c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}