{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe6ea5cbfbdfb6d467a162de61a891752896edcf5eebbc0303e97868e9fdaf3ad",
    "signature": "0xdf831e703078c7ea612f4f1adbce036639c618ea8ffcc2c1d76ba71dd58c02d5733ee87828d122fa2768ab2c797f8c09ed387bfefe8b03e9ac512b77b3a27fde1c",
    "signer": "0x729c61b59A882B38AF14E5b4c9EA7b3B9e835700",
    "userId": "669128768"
  }
}