{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xfbbcd02a8d998b92439d377d44ec49db248ba4eaa0bffb5a47acc150b02a5b09",
    "signature": "0x89b9964ea7c95948a3c121a98249b201021fdbf37e38d86a5f61a12b818eac0c04eb2dc4930ec8b97e94cb1ae6cd5526ec86fba9f8b34ce4654075878084f2fa1c",
    "signer": "0x9a5ed0b3F555Cb77D9B73d00AF43BaA4F88b1487",
    "userId": "736503935"
  }
}