{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387447420",
    "entityType": "User",
    "nonce": "0xd61e18c304f5fbcc6f93dfe1c2064f5ef43b9b3fee0def2962375c6fbbcd9012",
    "signature": "0x144dcaa59c6d7ccfba4d4addd1fad8b161873be371129fd344ad771c1191c5f9265fe90872920ae5be695f35c7bc36d5b8a3025799570325990772e5127bcabc1b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}