{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x015084e59a5107210cc0615900cb8b7a6aad0d7d7fb146d7d1944002fa21a39c",
    "signature": "0xb5f78b517c7aa1955783d4ecd1b44ec67a2f7ce942149854412b7f8fa3dbcd95624be1a92d966acdcc2118e34f8f9ee70b0382039b9aef4f5bcbdb8c4adab35f1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}