{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5e38cb7631e4866e28e1ce2dbf2dc8ff5840d8a2da914330e89bcbe59bcc7e4f",
    "signature": "0x1f19b177c4a965c7c399b262337695dbf7f6eeddb0f8a079c4fb44d03f62c6323e01ce686be0eb93bdad7d6ea4ca80bb07e836934d7a5271ee3ca56247c3d5d31c",
    "signer": "0xF1830A2f31719E995354b897318A586871ce00De",
    "userId": "152454466"
  }
}