{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd506cdfe1a2fa784313cb2d24b48d31d96e355325dc1f6a496f8e8896199afb2",
    "signature": "0x64f6a3a978593c77c6f81ccb1135b41b689f6b8042cdacc17d19d83ccad0a18e1087e9c5a3ad00b583337e1ff5a1f2944d1499717b35cce263b82e1897a01b931c",
    "signer": "0x7A74554101a194B92cB5aA890412885BC756f37D",
    "userId": "3225126"
  }
}