{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50375",
    "entityType": "User",
    "nonce": "0x53a46798281144465d4c37a5dfc934da3e406f2a8fb142e1ceca3f82c30c0780",
    "signature": "0xfb2fe193682290c342bf0c4e2215119ef3bb716e33d94ad684f9f9038ef4f9f727a3871f2331c64abb7edcb1816342eb73b0c224ff3c631c9af9c12225da17c81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}