{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322500",
    "entityType": "User",
    "nonce": "0xbc289fcd821493b02a052c3b25598ac04c41a62de1b968b3f268dc153ad2cf14",
    "signature": "0xc8111a19def81fa902a20bb623f129e97da393eb0ccd392877bcbdaeafda29247de44e04ab04d1d9865e37008fbc7601495636ad4f96ed8f18037801e8bd40b21c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}