{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x1ff47b276e0d6dc556d48150bf5672f59f0a2b0a7f7a66fe3b30fdbd63977a76",
    "signature": "0x6e8735fa4423be8d42a0a769566f23fb6b095a74b7bb77663651b5b87794ef2b59349c22567a21679be3175d603ba2070efdc8f8765cfb6425fe47dc344e537a1b",
    "signer": "0xd82c46a7AceA4E682FdF73597E02e8f442883CfA",
    "userId": "400115778"
  }
}