{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa75659309d9fd24bc19a142c258716bbbdc457747f281422b22260eccba8a67d",
    "signature": "0x3ed2a96955b9584fb4d5125ae0b87c065395541377c9a92e8daf842b15c50fe76e1a38446e9d6acf2487341f72e4175f426d1e2a027f298508554ae265586b7b1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}