{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68784",
    "entityType": "User",
    "nonce": "0x385d87dc9779fc523d42bcac82e64ab51882d540d4fc3ee846391885983ef452",
    "signature": "0x6f754d469ede039adcaa51ec9f9a30acbd686b9df72f65b6c5afa9c5cd1173de0f62c4d71ec9aee7851bfdd5149f92f86f56f3b9ecffe32ddc1acfb28b36da891b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}