{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x801bf8834dad4b532d362170585f17d52a549b3171d19ba0baa83c6948809583",
    "signature": "0x205e36b83eddea1e489cffd64d0abab14b1698ab05991c5fddab7fae67cc12633eb2408cecb73db8cea713dd775cb458cd56f3e37ed161bae792fa044fc773f51b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}