{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2adb1b452467add21e03efc4148169956471e7c199fd09fbbdb07d0d36fbc9c8",
    "signature": "0x7966a3faa7341746a4ac82d4e34f2de7c3447d7df0d8f5d5f260d7802f1fbcd446110fafc00a4c2d9051294c266be6bd9e8b1f128b7f36ce82b28b389a9287071b",
    "signer": "0x4787CE03de21Dd66aEd548B5eE0786E8cbEbF804",
    "userId": "768321185"
  }
}