{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877849833",
    "entityType": "User",
    "nonce": "0x854185960b4d9cd9cb5172bad8d3b36e016addbe125e021d5ae6b28b06c9b5b4",
    "signature": "0x4e2cd130d07dbc1cb7f10884a397afc64d7519775743f3347425c22c3a7d92a57c7f785f51bcfe1b8b0c9324814193007d3aeec977638aab6ff4ef46175effe11b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}