{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396895",
    "entityType": "User",
    "nonce": "0xf929bccfb489c1260e1e6b46bf1b24b5598f55d93f92d04924bd070e50b094de",
    "signature": "0xaf9e20d1286a4a47df838a7befa4469dfec429f08b074577e0a8a2e8f8b44a7e4f38c48b39d9330b97cc7c3a62abf286a5ac531a43836ff5c6abd82d1334abba1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}