{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "675219",
    "entityType": "User",
    "nonce": "0xb0129b9f5a5e433fdc2ff6e67d4e665793b856a93fc42c3fefafd375f74827d3",
    "signature": "0xe5b3352e1ebdf22bbcc4a32f3be153f180e955ef432eda1f535e239e8983db83727359f14505d8aacb766a69d97e7e84b477ed772cb488e3f85eb2cded6830891b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}