{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "619242476",
    "entityType": "User",
    "nonce": "0xd54fd42beb9ceae23335ec36c72ebf5c84b95682eb3db6aa226c3a43e3faedf8",
    "signature": "0x8ca2458cd997940631bc932b9df889b8f4bf74fdb80c453835a52b441f4e8f7c38cdbe574b52cff0650faa0e604c32ac0a685b48267cdc66d0c9be5ea23e33ee1c",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}