{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "61507",
    "entityType": "User",
    "nonce": "0x6839803aa07e17fefe2355bf2b9b53212244a01ab4e29fc1f9a2dfc63d370a55",
    "signature": "0x76478d5b8184ee650aefe4e381e930db5cbfad67d7a840df7e69bc795b193ec14fe09630b055503cbb1a29568fae140c95716e0306c43705ae58425c05cca58b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}