{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243478",
    "entityType": "User",
    "nonce": "0xbee7053c0dc4de732264eb4bfe58c87670fa66e2f29692136033d206d18183ca",
    "signature": "0x499c04e71b234fa649c331de2544ae7bdf879754b0ddcd34d14ac7cbf6a6d9b77f3036a74f18b35d39d1e9d559bc48939fade9eb5cbeede92a43518facc90d661c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}