{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "349488",
    "entityType": "User",
    "nonce": "0xbb5242ff0b758a65069e20001b382bba0a014db4ace775811c488fb15a35651c",
    "signature": "0x616758c0ca4d8219fd0065821fe3ae506529ce4977ac1517309176e8db3cfeee4fb413c0c6716e30fc4db2b596696541405db58c144dd0536d744551733995061b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}