{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbf205923171d2c4cc4f2a546046de139a4e069e8006e8b1744f6573c0177803e",
    "signature": "0x438ab8ea1ccd9e236970b05e87af9c6fbc8380e6f7a67a0b79ac8ac6cc315d0806d23b237f08e37d804139a6bfae892340adf45b08142d72d7b23fff56d1f2381b",
    "signer": "0x937468B64AcF897560Cb383d2c949c2dFD298Cb8",
    "userId": "724619993"
  }
}