{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0x5f853203d838b6b5d50e259abd632594f1e536d1970539ba9dd5bfa8e4c510da",
    "signature": "0xc769f0e17188f323274c9d9363e86906750d6049b819b2c460a6738a84a5fcd66ccbe24be22eea59fa4fe0975a02fcfc58e3e9955531fd0c7774d893110069051c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}