{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831215165",
    "entityType": "User",
    "nonce": "0x45888dc1d6b89476599549f38b207af680c2fe268033eb4ca020c6d1b59a9344",
    "signature": "0x6043a5f5e5ddc5894e4700b067cc7b5172315dab29b6fb6553a15c82e8a81e846c1b3a6ed0e3dc1eac7ecbee6fbf7d4f92f647947e31a704f4c3636f1bae14d91c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}