{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381638009",
    "entityType": "User",
    "nonce": "0x13365a2bd5872366d97d887fb2d58cd72109a97daae14e9279383329e72c24a5",
    "signature": "0x23ddce8a978ebff4e8e1eda603179b586cf6916cf3148613e41af1a41a2eaecb5c25979b95ae1a0ad585a5daf3a51c33c08e2c64dbe1fec86226fe40436e1e681c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}