{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4613c824fd75bfe38391d93ecb1e4f10cb94dc0d07b90ff7d5a4522cbc2bc083",
    "signature": "0x933a904cc44028c8c7915c753ac3e50155a386ad0ace6255190935b8d548447b5e88067490444baa795b74feb46b660f8adaaa23bf0e85638ecc903e43ea13d71b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}