{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x840faeb88495419fa90099c82d9b314875dcb0410bac6ffb30ef633ddfa98c24",
    "signature": "0x500fbebf8eba07b41fd19d3c596f444ed02c8b0580414226b843798e37b469e16eef58489e7586ee52466d3ac22244f8463aa84728ad0e9bf1c08c09e03438b11c",
    "signer": "0xbf1512a4755AA9909ec2b9b1E386424E0E7b6c72",
    "userId": "868171077"
  }
}