{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x133a19dcdf91e1adb3485746b13dd3b1f8e2f067245b863efd2dc0eed9b5e317",
    "signature": "0x9f7ceb8a5711ca62f46e07be0fdede5a5baa72e67168979f45266f97180963714cdaeb8fbfa47b4c6bd7b98cebf25dac6f44388b8dcd3a1d6f38d6d594ea26bd1c",
    "signer": "0x25a5C4E9D24234A8dEA40FA47BD428A360A50503",
    "userId": "601426972"
  }
}