{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57328b69f38bf56aa6d23bf9c8bba376e31c83e0d2d871a8b12f853a5c171361",
    "signature": "0x7f0711067f1260cc6a4df9c21afdf0c90339ec49d0bb0264d6fd0219d91d33dc5bd5de3dc6e9cebe4e423252227e2a9ab33d7aa1b7b982ef761a3dd3fe75e2e51c",
    "signer": "0x78DFb3273C763696A43106907732780CF2A4431d",
    "userId": "677555125"
  }
}