{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x5d7b4c079e851b6c6a43b043a66f091d4f0f3aec837bf35aee37d49d6b2808bf",
    "signature": "0x476698704c9568103a7e5f06147d145d5e0a07455beca4facd2ff4a6c29bdbc4374a121162fc372cf84d63612cfc482b1c8a5f03d9ff332291967ade0fc3effd1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}