{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0x7b39eb520611df7fb57cbfa4d6288d7862d086f05a2fb1917d0c7d8bbefab033",
    "signature": "0x82fffb8b92dd8b1acf94015d33bc7ebd4b5cd7b313b23d081bcaff51d68413853f7a5af0d4a78237aabf6e3cc077c2592f7fd6423788bbde88936901347761ea1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}