{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa1fbdcf34bf85b0ebb11f50f709282dcf93167d1ed5fded5e2c03b696eaa5ae4",
    "signature": "0x726095d15d34dba9e08ca33f7563f166accd6976622d44f9e1af087f15e2ae9031f1ca6bdf460a61f0ab08ac4ab0ed31ab7b881f4a1229d8466a7117dfba474c1b",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}