{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1324268",
    "entityType": "User",
    "nonce": "0xef89ccaaf596a02f291a591b05a454e22ba31ce464e6921f428fdf262f61874d",
    "signature": "0xfc859283585e8ee91b6f2389e630aed0f2ab29614234f8f5469d4b7d28158f1614e6cb4bbc69bd733bc1761da4c194a337ff17929c4de18bd092a1a87ef1d3781b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}