{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xeb55fe3912e05409a56e7a4ce0dcd2d6e1c2fbfc0f13508919be7e41edaf0998",
    "signature": "0xc94fc327216b0aaa0dac25f3b06250756a24f33037f6fc1e6219a07aedade1f97756ef17a48fdd5dac5b62753c237a35a8dc57674a2f65a6751015c5e8b241211b",
    "signer": "0xFE17Fe2677AF57d35AbC9CeafeA4FF91C4542293",
    "userId": "934065758"
  }
}