{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x4f3d823581a428aa4af33080f124199d9bff7e4bb25d7f2f0c9c279d13a4ce9f",
    "signature": "0x470c246569e9fd9190e96ad7244c3146928c43d1a040543e7ca4632ea033ebdd000cd43d8d8b65858b55a69573d470f49fce78e0e164ecbed4cfea64e923d0db1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}