{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "380925",
    "entityType": "User",
    "nonce": "0xd4ba2884e6c6aa978a59e22dfb2d03d038ff6de62adc83b4e888d44a3a0e3387",
    "signature": "0xb289e36964d2a01c53fc681cd1ea377d238c6d27913813aa5c4be9cdb007d3e144a83be3016d9093847a6ae8b1ae08b08f2cc4c216e9647a37d009d3bbd0d2211c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}