{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x17c10b646680031abb21c26f08043f77f46bcc87240e06d1bae1b18f709c30a7",
    "signature": "0x6710133f63d1c65214db1ea0272f62e4aa1e7308c850fef812479ca103b5764b795a143b5e3f2ee6d3f029fbc616337536070eb01bc4a44badd0821610b241cc1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}