{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354441",
    "entityType": "User",
    "nonce": "0x6e1fd895a3d7cc85064684ea68493d5b6b1bd707f5aa254fb62029b84820e195",
    "signature": "0x2ca580d2cab993830a1df195d0bf1a807a86a564cf186aac544e8d81bf092ed40d173a551a5ebb82203e5953c19498b25496130803a04e5791cca42fa69d228c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}