{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1341148780fbc97ce4499461d58d7ca140ba2983cdfd3118c5b345d28ae2de14",
    "signature": "0xa4d8b3f2111b248f5e0fe3717b0fdeb0254ad34a58cd2b86464d9f0963e872527afa90c71a5f7c3ee3f9f75ee5132476d039bacbe9d8436b0d992013398104de1b",
    "signer": "0x9D5A9ed216A0c347E35917A0Abc86a6Bc8264ff6",
    "userId": "715752005"
  }
}