{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776904",
    "entityType": "User",
    "nonce": "0x933cfe306aa39068cb710a4a31853d614ae931c699129d0d08cc781c784d2a63",
    "signature": "0x98efcc59cf00e61435d3a1705392a9fa914f4e31688c228bc3602bcdb64eac440f2c1d89d573463590e8052bd484ada896ac8649d36ebeb806953e05fc9091e71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}