{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x66b8fae998aac7c272dbf44cd194730c6b5d20d75fccc2a9d454ae250dc20347",
    "signature": "0xc7918e664e1cb9be45d93cdb100f47a674877d2ab727db8549e9de1c2bc4cb883db6b619a984779b906bfd42ec557d91135dc90fb305209113135971b164116f1b",
    "signer": "0x0C43E9790FF8e2FbBc9b44B27C881d7Ab4FB2cB3",
    "userId": "895941245"
  }
}