{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x54417d9be36b7ad606ec5d2355d385183003b15238164ced2112625eaf1a4338",
    "signature": "0xb91f3c5b561c2e1a518392b3f1ad46020828d76df2eee98e5344c70815a161770ccd9fc4e8dab893038468c78f940b2cfbede35dcc446bb5556cc1a56ae65e651b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}