{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x3d19a82182c01629436cd455437ba55332e29c91aaed563ac4ac7ad9e7a9c038",
    "signature": "0x571efb71395ac1c97652bf484880f4088d3f84c7dd5b2b5fef957f408503785d01b96211573d86ad1a2324f3365d87b98ed08a452db10f168817f96237e742bf1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}