{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0xfbd3cd3cd142b15a4067145acfbe0b19b83fb1167e5fadf4a0fdad47dbee0d79",
    "signature": "0xbecd4a5611ce1c8d8cc00476d2285e08d435c038ffa9c2d2833c6f5868244c005c0e9329162d23b93d0910d61eae487965de6fb99e0b34f228f9a713244559e71b",
    "signer": "0x2FBbf17ca409dDEb6FeA2766042a0A7cf2Ddbe83",
    "userId": "8223"
  }
}