{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77987",
    "entityType": "User",
    "nonce": "0x7cbeb403288a43fff0403724ee3bc40dde783255e6c86fd27913a4e03a66cc39",
    "signature": "0x2668ea563f8403b7cc5498869a0bd8b3abe7c6012c4f2daae6bacc8c62d18e9344303b524cd475f7d8360605237ceb5df55400bbb22362c365adb63c41b5b9901c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}