{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54872",
    "entityType": "User",
    "nonce": "0x814a5c236b8ac62de809e50d8eadf41f1c7c0e40dad26bf36106ddcc355c6ac7",
    "signature": "0x3c3a6cafd5076ac0adc802b96294b8995768cea6c3e4431e8ba22d00ba1e0b92200cadb09db9e10664d14330ac1c6105878fdf29e6fa67114843d1cc31f4b4de1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}