{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb4ee5b1a4e62d161a49b739b6e2b4f8c3a47cdf24421ff8ac463e1625a74813f",
    "signature": "0xa86101b0be44cde5cdbddbaf833dd61a06b895e8ab6d8ef7bb29c812c5f602b544671f3f9bd63265f132ef03dc180fef2ed3da34e461fc3706945e001428947c1c",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}