{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "590052416",
    "entityType": "User",
    "nonce": "0x3a576eabb4d0627265b4d660356689fef4dd8e52dc1d0a179473df8768e137e0",
    "signature": "0x7d4ec6c9a8a3dd47cf6454ff755fcb9a3f4000a1bbf87e5124f1afa9d37521c16e092ee7b0d3346f95e6356dbe0925a93a9594fa96c3fd27d62e56c251c534071b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}