{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x62f670504a6663c8e87a543f7c6ce32c9019782e8b434c0d34f9d9f519ea69b5",
    "signature": "0x7525680bc55334089fc70ecaab245b22693e7fed0feab660cb4e61d9c47755897a3594b4cbfbfc3c9c50b030b08621c739c6903d3c167e8b79d1773a0fce414e1c",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}