{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x50b68ac1c999d1acd26a092c232fc25d8a4e9e61abb5c6c0d39992fa9fbf25b7",
    "signature": "0x1e2dc06dee56a382e8596825a47c8221797d9927e5883df118173b2bca67490a4bdcf7c196d199a7b49b0159c1652e5a9d62a58c6f4c6269c396c753ff5908151b",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}