{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f71e088b83cff8aa16e7bdf76b90d02c550c57fea6fc8e8cb8a016a04f0aebe",
    "signature": "0xa2bbfa34cb591ccdaba19d1c9a9485b1bdf8484a46a973f5551e171ccd2f368c5c0450cf228090659cad665a6ecb4e6b22b0e3e2660091f38b20cc32a77550271c",
    "signer": "0xAC2B57D3daeb58A8F8eB4C8ab87d35403Ad10797",
    "userId": "295795749"
  }
}