{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "603738180",
    "entityType": "User",
    "nonce": "0xa715d5ca8590199ebf2e97126667996c5877cce1813aa65e3055727ffdce6f06",
    "signature": "0xc349bbc4f357c09ccd1bbd740327fdc53486f3c1421639d399f302aa890c36e6743643835ea119b7e87c900989527909e28a9be3e30d635365851744372307ae1b",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}