{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "553771456",
    "entityType": "User",
    "nonce": "0xcc2823c0d08280881bfa0339860bbe65ce36bf24d673df7832f4cc620f142416",
    "signature": "0x2305daff466558e70aea9ac43a82261828b7e059d16985c1ec38aea26b0e9710250d44bf9cf40a401ab938e6d1a473e94622e0b9b88033b3470109ae039bb56c1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}