{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x007f93338f1444f67c596a5c5b993dd4038618466cdbaabbbb853bd6c65d064f",
    "signature": "0xc00b28421ff8271c9f8380267a946e860a41292cc01d5d2395f55844c6b46de611983b7f985cded03452224f82d686275079aae7d26ef1305f39886d2b6a37951c",
    "signer": "0x3d4F6b88eD197957eDaD572846096bc7B25123e3",
    "userId": "799370811"
  }
}