{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305916",
    "entityType": "User",
    "nonce": "0xb141fb38adf1f52aaf5337d273e1ba6597e1a04e68ac35b24810da335b15d8c7",
    "signature": "0x510ae002ea714fc8cb693d26f9aa7e506485446e5a9f123d4f888323240ccab13004ac2be39280b22da5ad8d388c6b19bbade28f2d7494cf74f2761a2e1366891c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}