{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec8bbcfdd06cb5fd6a2b03ae0a0b83e8bcbebbcb2af05ed4d9a87bf21764a8a1",
    "signature": "0x88dc3888eca8078ac3fabb131e7d5141eada8399dbee66752c452a5b1f05b5f92639fa8d7b134ad9153916f961d948cbcf5292adb6dba397f39bac6ca1e331ff1b",
    "signer": "0xEF645db3505402bb23edEfe2C059199A7782Ba9D",
    "userId": "392916852"
  }
}