{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1421157",
    "entityType": "User",
    "nonce": "0x017fd91a884854f53a9cf2e0831bbfb06be226f02d4d675319672202bf8dbed8",
    "signature": "0x03c0c28882ec5705a31db907776c9899a761f618d6a209b509a4d245d8d8ae46101516230de5b8c0c5f4ed61a690ccfe180e974597a23c78f4798ec4f93e07fa1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}