{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x9121a461d517ae1bb4e4f53e64ea25e39a2b02e6698d15c86a3dde1d32957df2",
    "signature": "0x4fc29c364f04934c77b1df71f3ce6c05c2768b50b35b1e00d2b26017d8cece875e82ab0aa17b53060279200441dd575a7a8cd322cc2a65f6533c798ac96d38041b",
    "signer": "0x506e6f5baf90A83bb0536A27bbe9e02aA3D84795",
    "userId": "925183178"
  }
}