{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54961",
    "entityType": "User",
    "nonce": "0x196f3681d60f8fe16747bd72d92bd6292bb2be49785bcf0ed5641c6a3aa64b3f",
    "signature": "0x286ea90366cf6eb1b2e7c22dd66a8bbc8ef14d767a1aee7362708f628f09e16d52bae9bc0fd5af2734b928321e3deff0ec52ee4166f6f52cef5c6b9624a51bb11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}