{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe9d2a53666689eb8cfa513ea0e005f62980a8368d314b1256b180d972ed668ed",
    "signature": "0xef42abee7861e0719e19e5ab589215c51f7ede4aea9eddbc81d0c52575b5a8996c2b304c500d5dbcdc9b1ec0f01ba6b192d861bb68e8939086a3502fb500267b1b",
    "signer": "0x02dA426eb21fb91c1B813cD4C419f9261730Abe9",
    "userId": "424871665"
  }
}