{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "285584",
    "entityType": "User",
    "nonce": "0x7bd454d4e95c2bd13a7bcbe5d20a0aa7c29274c941dd4c7b6be430b23e06c31e",
    "signature": "0x31504f81c41b44b139d3c65983c346cec258e0249ad9887aaf1ff2fee331f49f35f984287a71b808e8fa1beaecdddfad05e0aaade9617f782b93c1859c4eda571c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}