{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "141209",
    "entityType": "User",
    "nonce": "0xe23a8e6a7293eafe5f347f39b9d094638a08f8bcf36c31210e1b9af4709d652b",
    "signature": "0x66d5b645f415bb89a600088eae8ce23750c928aa8224f420522f83ce801b27980a4989223f2718615edf53c0ba349b221f30ddb9f90889a8ff2a11479d3d93801b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}