{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54166466",
    "entityType": "User",
    "nonce": "0x5931a0456adacf8ed398f8ceb9fbc233aa2d6b70c6d02c07731e1889a85e87a5",
    "signature": "0xa5e99069596a8c678ff61bc8e33409533d09bf451fd8bd6f0dd92a245af588dd38732653896e7876087937e93d375205ff67224733a5d63c6cb7e82c45ab56431c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}