{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321960",
    "entityType": "User",
    "nonce": "0x23b6acbc74ef350e898ff1f5d3f7e508396aaadafb40caf321062dd5d8d02c97",
    "signature": "0x4d54c71f1a30a7e8c1d3dff490def6c63d72ceccb845f95b8746af84f62e90ee24b6975e65525194275420097b0d9df0aa73318c82448b59948d751ca6f57e7f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}