{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xd01cd34611eb79d2b7ff9b80e3cf9483b7680fb09e1bdb9c0d15d61d06db4b79",
    "signature": "0xd0ad2042272515c50abde14e590a73bdeab19fff6bdbe3669803e0d84f62503565942828d6993fa8a0973257a777107da7a7e6ca5f07e7dd1d649dea4d606b3f1b",
    "signer": "0x9D77b14c2d2b283B548D3E693d8AcB5284e4bee1",
    "userId": "607561343"
  }
}