{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44577",
    "entityType": "User",
    "nonce": "0xbf452a15ff59388910390f6a77e4b0dd95c3c2c438eea2d9319054ce012de5e4",
    "signature": "0xc7d2deb6c2e43703cc005042919953ab07f2834aaffd936e91c2cbf4b7ec7cb36e0dd72ba0bff91b072f330db1588624b0ce21abeec4248822a11561219a01a71b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}