{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642625880",
    "entityType": "User",
    "nonce": "0x769604c39879da147531569ca7c579c10942e905b91f319bdd58fc7615a1e536",
    "signature": "0x427b1f887fe7d47f78f618a4a7bb32286a4bb1c96d7a9d053b6900f05906590503f9131b29eb5afecde691b2afb5c69106f762e084717b608bedf24bcfdc86771c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}