{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3742885a6fe27f3a24520232e0b05fafe4e0e4cc3e18ec7b8c406eb5119eae81",
    "signature": "0x415134a5fa21b7cbcff594119949946ebade10b9452be1ad0429f190f1997d37191b495a17d34ab8b866810652db310f7b5af13473381b8f89d00d12e62333131c",
    "signer": "0x476B02E0417232e36631C72A4E425F63ffF1D463",
    "userId": "264035298"
  }
}