{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "785367",
    "entityType": "User",
    "nonce": "0x8b0dcf6e60d69c1ad37bc59ae95cd34605ae76d492c62fcf72cbf0fbd42e3e40",
    "signature": "0x3cbe5ea60c0ff83854db6532cca961688ef8882d6568f7fc05b1dd22b64ecc8b60fdae1702878e147a35b9cc1adc5dcaa46e8c9a7a540c6320029bd92c6f93831c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}