{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xbabed77d34284a0daff80a6b440e48ee03f4f70455ec02560c4ca5e6bbe4b47c",
    "signature": "0x645f660b30b91156bc22f0808a92500d058746f7830b6c821c57af762f1ed4ea1310b0bd58e268ced87fde45d6c3349a54141bdb7dc62aaa0c09d88c97ff7ada1c",
    "signer": "0xdd5D8856cc04830658A172827fCaC1FC99243EbE",
    "userId": "587492476"
  }
}