{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50a2ee6447c37f49350a814c6ef2450695845e0442d4a05a27d5589f5f19e601",
    "signature": "0x526bb9f202737d655cc3319965be9e90796ead53f0fc841a1d9ff5b4666d884b368445f8a146fad2367e633bcd3ceb6821a1b774b9313ab7016234d15b5d2e081c",
    "signer": "0x2a3494ddDB5D34Cb2778C63dC6e5eBeF02071FcA",
    "userId": "280220384"
  }
}