{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3617",
    "entityType": "User",
    "nonce": "0x41a8526ba5255b03ae5c9a7d43a1c015c7e8efca8a3110da1fcc9da8e9bcddc0",
    "signature": "0xcd3b197fb6bd6ca9013099a08854fb288e13353bfbdc9830af4dcaa133c372bd46edac6a41e0605e8ab3d5cb3d552c62995a3a5aa46b49a01a06093fffe86d691b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}