{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753401661",
    "entityType": "User",
    "nonce": "0xad7472b909b27beed01fbacd301b743cad895fee202667bdee9e4f3776c6971b",
    "signature": "0xe9d435ce47354155befe9f3ee921a5e9d490644699df8c7398f01f0c333f5e3618518417d7eb8c8dacc319f93d8bab13b1fc711e7481dbf20f9f3cefe7fe6c091c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}