{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485171412",
    "entityType": "User",
    "nonce": "0xb8cd96380361ec7736a06dec3d13a45ca826b3db7bc9c8d00db951e2d450c19b",
    "signature": "0x520a0cb39a9cf3330cf9bc264d0f1a3aacea18ebb0ef98de489e7d8e775d6cdd6fe6e5ee7396e1ae6cb9a48aaa437a8c61a4b5f68927b233f5d294055ef9fbcb1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}