{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "277",
    "entityType": "User",
    "nonce": "0x4e3d75113f023e6d53e5ca247522586066c199884af9c1dcc5b4ca3983b1e31e",
    "signature": "0x3f9f339ea787c615e73c6d3f9fc7d223d589b41c76bf5f10a7837c5a8f8130b038a7de573006251b4415083a0f0846622bbb14d22b80ac1d891068334c79c4f21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}