{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1523538",
    "entityType": "User",
    "nonce": "0x24455f3fb16f143a249c2d72bf34e8676d9b3dd1340b9894fdf6d537e673738c",
    "signature": "0x630ee285d15047413470db5ef74cb68a78e91d8178480164bb59d5aceffe819400fd86cb78ca2ffd53fbb106b527f208718f5460c22ae8b094c194bbaf85ab041b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}