{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7807d17eafd669b406cad62af881e9187e95c0b32cc290509ae54e2f75e7250",
    "signature": "0x6e9fd0302e5a2e440700fd4ec3cd58b05e365b016bf66d30b87e7869ba31e04b4c2852ac3d2b9882182c61a21a188469bf725a23a5c9af27b49888990a483ed71b",
    "signer": "0x5E2573da6AB2d9DE6F1896b40DAB3558B017D1E0",
    "userId": "753786222"
  }
}