{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680645058",
    "entityType": "User",
    "nonce": "0xb043a637afa2023f98d72331878563a85e33ea2a5e4d2ffc6f6e64824383714f",
    "signature": "0x4a512207afbd275adb878320ea4409dd519235db23ecfec68b515062932962852c0b7cb69fc3cc1067f2f1b215255a8f7c138bff2f2aee88b41c69ab926210641b",
    "signer": "0xf7cb5Bb69a63cFcc4E9FEAB1eD8Ba25fcD527B3e",
    "userId": "976458054"
  }
}