{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820996945",
    "entityType": "User",
    "nonce": "0xe443173b33ad450ddebc2153359c030fd02fd6b06cecce3ea290cd0184ad10b4",
    "signature": "0x51eb83e571eeccb73c84cebb9478239770a0a1b6f00ec6a0983e8f37876b97290247c6466a46d30453edecca33c8673517515f97524037fb8dda719b29443b871c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}