{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437814",
    "entityType": "User",
    "nonce": "0xd71412cab1fde9c59657f6a6b8660b5eb171be98e1a33eed083aa5299600e20e",
    "signature": "0x4c97a283d029a5b141283f82bef5131034c4617c3e6f2c0b8041ce91941fe47c773f93a55a97f717dbd5b3cdffaa9af3483f9185a46bedfce471c416f98c85cc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}