{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x88e6e6b26aab113e503d0cc3f83a6db2f650621e44602fe47f11d9dea2640165",
    "signature": "0x72e8384533fded98715f282d25bc238459cc9ab9f5b2ab2d27bfaf944e86c2603d2202c42371990f03735c02fba570fa72b64ce28dccfd53a006f514e83a2b6d1c",
    "signer": "0xB0B5Fde7Cb92C7ee10Cc5FFd2Aea10eebb1193ca",
    "userId": "213139559"
  }
}