{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x565410ba3edb40c396d6489468899ccad42cd2056c4dcf27d56538b854da9e95",
    "signature": "0x01a2a6c421eec0e2b38da91b6250addff326ff1563a7c4375c86f80cf55330a02b955eea1e5a9d2443953620e6f45edc819256b367240f3268ae38ea7f4314ea1b",
    "signer": "0x821BB2f6A70e52ceb0794E8734c44fa97F6a26cF",
    "userId": "754605509"
  }
}