{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445489",
    "entityType": "User",
    "nonce": "0x223c521fd09516aa4ba1dcb38a3d3472edac5333075594349d91f3c0f10fb2c6",
    "signature": "0xc39e87bab3fec4e91827da3d5f812a3f272fb1e4fd85a85306d21397d727e6611073ff802bef9fefe77d053c9da58e70e0746d2fe7faf32627eb58b0f45d69631b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}