{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "315617",
    "entityType": "User",
    "nonce": "0x40cc7129aeb92f1234fa9edaf8d03f22b36447d048214bec6fb88a30fe45edb7",
    "signature": "0x1d15895269a52aa3b4d6009b6379edecb133f4b610c7d6c29c5c8e5f752f79de29112af44f3d77274343cf24ee7e6d9977ccf4cc1e451cd1c2912b63b95abc9a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}