{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f22b4802b7a60c9feec764b56ca2569a1e234fabbe3e03496fa19e181637117",
    "signature": "0xd05ad3f9a615f7aa7343d527802f01985861f7e03919833d7d30b54039054dd61c8cd0d706c5143d9d31e810a254f4c0f2903ce3cf18b7d7f9f63ad6ed5367a31c",
    "signer": "0xA14f5dF620E9B04F90af9b039d3c38167aA90b2A",
    "userId": "648437395"
  }
}