{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b0d6646f6054fa249dccb47ffd6ece804604e532b0e54a58f8ff6f759a25773",
    "signature": "0x4cfc3f3961b1529ca4bbb4f79abc0745afdd061a5487ce5e06f7df98135a40e4574f327c3b0d28746e3cc056a6b14fa7d1410902b99ef26da23d3dac6e2fdfd01c",
    "signer": "0x1183283F52a48e28ddA927C13d3611D3f1f7BBA4",
    "userId": "947046802"
  }
}