{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752389",
    "entityType": "User",
    "nonce": "0x3ab679acf11aa812244f7832fa83377bda41eb5896a501a97292f0a7ef846116",
    "signature": "0x6726637abce6c45e1985695483e3dab06ef97d2a33243c7afbd075fc20520e686793054d6604753d56d05b51f9153019d66792191e2a90032eccd5c796817a281b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}