{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1345418",
    "entityType": "User",
    "nonce": "0x5775eb93ca9df61335de2994e5117a821af87a893b12f577f72d6ac1d168d0ab",
    "signature": "0xfc9a8234369cb84f7f7b4615d02ea3d3fa33635ab11e62dfaaf3d4a3c46b3c3c2dc701ab548f09d06f842c06419cac4b40a793146247c883ccba86bde45bcf011c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}