{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x65f3be9b914597eeffcd66507e1cf476f07e69e6152ab2062a7901fa872c2607",
    "signature": "0xe1d3b23f6f297186e39975dead563e407d6a44b0de4d6cd23b9c183ec9c2401a06a2ced3cc79cd9acb18bcea6992e28fdf4c9a55150605b748a089b26bfe525d1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}