{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0304ba057da800dee64150aba81d98a40a88833f1a13ac32d799c2303832f87f",
    "signature": "0x30a9cce0f9d921c8211f3752474ad5e55eb27b60ed635e69e83a6dad98a83412173f4670d01d13e81556f7be30e4d9642ca71177ab1fe4be153d9ca979517f551b",
    "signer": "0xDCAc8DDEf09a631FDF87e21cE425B1AcEAF5B300",
    "userId": "687643431"
  }
}