{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0xd55250bff2da082e7bd5392433149d6c1937a2a838f5f873d5af3c1169f42f81",
    "signature": "0x874d591dd5351a01c177d29e9876096a55b434d0f93a360b35353661bbc89d6519be0975ba0841287188c92a722d21eba5a4b817123205f6845965ed11736c7f1b",
    "signer": "0x4a5fA5326FA8D8BA8c06F330B8e7AA7A2e63D3FB",
    "userId": "685706656"
  }
}