{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397591",
    "entityType": "User",
    "nonce": "0x838ec868785bce416d8688652b4bfe320459b1018fa21e1fea893d7c7ef7ebe8",
    "signature": "0x7e1f239769995f38acc6fb64e29ea4160fdf209e2b0bc5312a2a1502e85e1f7a666ce7a3be8ff9fa6cd0f7348b2b315f2ae402f1ec178660aef8badd9df1b3251c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}