{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222540",
    "entityType": "User",
    "nonce": "0x4160cc7371c74b23cc7d6097869d6da7b9adf216ff5fc8e7400bc7f7fbc2e4fb",
    "signature": "0x85fd89b49ac7495fb2ff2c893f79017d7063e9b6f24be80cbcdff8fbcb5c888e239f8fbe923c0bbadcd82cf61e846b8a134a794ea37420343a1eb7059b2c5a3d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}