{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578212224",
    "entityType": "User",
    "nonce": "0x809cf5e2888d65f0e000d8ec203efb45dd2b2e696d30b03cd8cd37a60ce59eed",
    "signature": "0xe36779fe2b37e71e8d5d19b21c58488e2339fabbb2debce2d21794dd8b4b09c82e2d4865e02b8a01d0149bb1377a5311a9c27df45bba256c9fb7b744860531481c",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}