{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28850",
    "entityType": "User",
    "nonce": "0x743254807f392d68b045ea613563bd058c4a754c23e8719f3906a36e2726d721",
    "signature": "0xff0e931535e288848111c804e6872c8741c6fff62c4a94bb0a5ab617b7a3ae0d04b253465a6d5be1f6eab9d3cac84c96da6f46a850a0fd8277832ccb8b21bea71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}