{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372498",
    "entityType": "User",
    "nonce": "0x12b860dd6a91a21ceefd11a5c7829ee48f9ac79f3dc99a4f1e48e84e8a68ec05",
    "signature": "0x0d268c0f67692439f6031ef98fa9414406c9a3f9294c4532220a3f7931ea0bf2628947429fc409edc9b328228456d5219f81b01f557f8ea2562c961bdbea63c81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}