{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "724041533",
    "entityType": "User",
    "nonce": "0x3c08c390f88e7f6845ef5218bac3b3cb8508c4cb2cc76e10707b6614431cd6d6",
    "signature": "0xac040cbf161b5f1d52127904ec1ec36e8ca4f580a47e91ebe48df558b38e73437fa2a6c89694ccdf3ed65cd3c887d7c29da6749f2d07f2cae0d60a45520c16ca1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}