{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50516",
    "entityType": "User",
    "nonce": "0x6ab60ef1044b09e52965dbbd2ecdbbaf91face80eddd34aa0b9306cb86e5273f",
    "signature": "0xb8cf29b9b20c850e3e7d63615a4bbc4ccce771d7a91df34044f5d49a56c5652f366d89007961338bda2c4ebf24898182565faa882b42c06a3e2d9f5cb9d153781b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}