{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3394a1e75aef1b74599a3e37f0b435aaaccc3e2080def52acf0fe38705fd9988",
    "signature": "0xbe117272a78fd33d2554329aec5249ca1646482a8484f7f2cd49191f5d2ab70d1ebe3ee9a1d89f0fa4106e2e2edc5699c1fe6dd9e45ef929688ba836b9fe63211b",
    "signer": "0x6e8091305075B855672CA0d738FbF17D4bb8d54F",
    "userId": "639306401"
  }
}