{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102301",
    "entityType": "User",
    "nonce": "0x6d4b2855b3a14a0b75eabf69d38d45c715fe9e3396296ca8d548554a2ce52ef4",
    "signature": "0x330af4b43664345c7d76fe45f5fb5f57a48c131e0dafbd501173384b30a5e9f70ddac7611185f0912c1cb5c20b00a5a5cf92d4e875002c7c681cb75cb7aa92471c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}