{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599431797",
    "entityType": "User",
    "nonce": "0xe7195ba959eeecd3f207c522141061ce3cf465872e466273f61af28c787d0af3",
    "signature": "0xf93704c7db71173eb0e1e975be65304ad991c6b6d1cc156f49557b7734aeafec3eba8103dd39063aaffc8b93eb15b5ea2ea5bc9af89da56457f31bdb0af707371c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}