{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x90bc0690ec300aa1a19f2720fc91e9501795e762293cf5293896492eb548f507",
    "signature": "0xcb4a24023a66fa79110355bb635240bc9a4d7966cf5bbe275674bd0bc02dca06451b84277528ef8d5dc07d3d87ff149ff161a376226b28c958879dec683f858b1c",
    "signer": "0x9A1A483b8f4450Bf43992f98248c0567cFE557B9",
    "userId": "126704903"
  }
}