{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "766654",
    "entityType": "User",
    "nonce": "0x155fda3bf07da5a32b0495d9bd452e330484d67429c5837f5e3e6f18d39e0049",
    "signature": "0x1b672e5aee458521bca81c7e1315139993b95154285928387ef27afed30e77693ba68682318ee137237e0761a0b74e00ee31d42b7c5bc1f8dbb5962a5a1da09c1c",
    "signer": "0x60503113D254c437C2ea4c18d70C8a9e20fD871f",
    "userId": "515269421"
  }
}