{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393688",
    "entityType": "User",
    "nonce": "0x45bee9e45604733593bf0a8c359ff1db7363b07924ce42160abef4d2a75c1da1",
    "signature": "0x4ebc9c4d0e27dc5b01675a4510bc00a5d7255ee7202dc7dff2fdcd65171f6a2a3062a9b845e4750b7f03cd774a03ba39ab5f4c4c4322508f3e20fa76caace1d21c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}