{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91937c1c79c2c7f151e76694df494b6c8dd8cc5a9689a73314a6c387ed768d18",
    "signature": "0x1c1c410d318f8666b0ae5122ca61cc55666a318eb45a096e856e9ea67de28e7125e4f957890a514943a3476a7f016075ef2c9701ad64a58fdee6c01e6d3e0bfa1b",
    "signer": "0xE8e175ea2857dc61bF8dd825960B9EC6930D58eD",
    "userId": "281589352"
  }
}