{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4142",
    "entityType": "User",
    "nonce": "0xa1eb554fa0b0994e90e898088110dfbc6c9e0c19673833b7568475fd2b723df5",
    "signature": "0xf78e2e42fcf0ae841727b38adf6b68a014b8a5c4f95db3de3f23e96ec638d4ec7c15e4e35b677959e2d489510a3ac892641a0108606b427146070344a67702061b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}