{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5729",
    "entityType": "User",
    "nonce": "0x1abd91e92eaa5234f71c9abb898d846d7107ec19b5f00494fa5675662daa24a3",
    "signature": "0xf6c0f216a7ec253f12b3f21515dee1c1090c8c5a2dd830cc01fbf7da69e11bcb329bb7ba6f9e35262a5c19f84f30f1e150fbdaf8a562bb40dc4eb8c89c7cbfcb1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}