{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294860",
    "entityType": "User",
    "nonce": "0x66f4fe1df433724f567546c7941d89d52e12a9b05fcbe2f705f61a6eb55dde22",
    "signature": "0xe9b0a092f58bc4c8f74d48d4f4468a661a46ced44f62c67a32689ea93845d55c6b8d584bffa7ebaa94dd48b403ae928cbab350f1aa1ea8fb1c01d5fc62ff9e821b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}