{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x36e1204611b3cebc372eb3cc6c471e1c783b37a54678e3fe1ffc65f7a4173aa0",
    "signature": "0x06b51e78574e2e57bc6c867d2bab7d1fd0143405122898ce551b602ecb4cb26c2303c9088050faaf6cfd0a744d730214c882680d16147ac35a867ed55f40acb61b",
    "signer": "0xE00615A8AC0c340CA4CB8e8843f31A8104345D5D",
    "userId": "623710898"
  }
}