{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218728810",
    "entityType": "User",
    "nonce": "0xff51aca890f4174485fcbe0911618ae91f41901d63be81262bafae69f26fa7ee",
    "signature": "0x2ff92a9397df2ad30273b96c3df340b0291ddf03096e09ab756d3b7d0766ee6c4f13bb4b847f78aa348b14af66794462387b57eb823abf309724bf8be9d8c7b01b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}