{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "995293503",
    "entityType": "User",
    "nonce": "0x66a6ee2b9b6dc820a10f496ed6dee6d2a5c3a7d73b6891ed8ccd5428efe8b128",
    "signature": "0x1ae5f20fc2b58d2f1d452f994b83f656cfef6ae2135b113e54834a3870e6384f6f68442b361362f5dac509ac55ba71b1fc85c93531f2e31b12fc19c30e4150791c",
    "signer": "0x1f4676E66f85a00704B84876ae1B19DE3eff1F8F",
    "userId": "965243886"
  }
}