{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304545363",
    "entityType": "User",
    "nonce": "0x43c329ffdde15d8eb26fb3267ef40f658b3d8cb1cb376dd4ca15538ca3b2f1bb",
    "signature": "0x401448d7e7933528c99277f79a4b0d8cd8c7dc5fb94295e83aab1aa764e7b53d39aedaf8b1562a930164f82f4c74be9c261f95af0b151f8f1e88a533638aa1821b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}