{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278371158",
    "entityType": "User",
    "nonce": "0x85617398369b36dd210071fd59290368b1fe2b3948540befeb1e3e792499f8ed",
    "signature": "0xd5345453d492131d73084a7af142fc8ce2ff143080f8e26f4cf90beea3342d60552ba5e09c75447c1af4b9c288fe7283d146bdd9f63bdfc2abcf2d956e38174b1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}