{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120328011",
    "entityType": "User",
    "nonce": "0xa50dc1907183c5298849851d080ad896e8beea3bc13131a211e9dcf7de12183a",
    "signature": "0xe2fe808ddaec1c6eb6a17f1ae96618517a68a8bed187618d20ef65f5b0ddd7121172e9f9a65f0aa9571de80ee50d2b7bc38bfe0c6572c8ec86508a3c1a312df01b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}