{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16497",
    "entityType": "User",
    "nonce": "0x2e9d474f0325f57cfb6358e88cfb65c0f5112cc7893d9bc53af4c677117598b8",
    "signature": "0xd6baede9b24c29b5914bdb682a51d3d75a6792861b0fbf53a9dca8a7eb1d1c231931fe147f5be560297c5e6218b34ed7585162e9d91568e8d1829f349e9483201c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}