{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xed5ff33eeafb6b2fbbeca4a1c660c59909eae133028857f4db619244b6a02e9b",
    "signature": "0x38b655bc4456f3e5905c2e683ab24c4953571bccaa5c5f0786068ea897e4820c55f181f6e6203e812833d8f0613ebd27172242c392118da2652b1cd92897bac11c",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}