{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599112855",
    "entityType": "User",
    "nonce": "0xe3bb64bae8484785ecde6114fdf1737ad806145af8c08307f358ee52459e3be4",
    "signature": "0xcae77ffecb49639b6d74fa5b673b51f9baebaf9844a3eeadf970f8a3af7250995a27268af544b49a2b2da3f83d4a09d05f96290b52983f29f46c79ceea60ab151b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}