{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768982526",
    "entityType": "User",
    "nonce": "0xac35013d0943e11e8c91f36cb293565d53b6c52905509f2ca29d5345ff83a5bb",
    "signature": "0xde2bf940370da341fa7ee409acce1e22f78bdc7540ed83dcc0454ecb0f57f9377b23fba44b7c6b6586c067407b0f6eb0c5a66737f2a992ab27bf011aef6aac6d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}