{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407048663",
    "entityType": "User",
    "nonce": "0xc3ec4e181a7b9dbadca13ecf54bcfb801c9b235fe9225ced710f80ccfb348118",
    "signature": "0x91fe6e9a3db7f2f4256be21a4f44464f0ab419c30d70de6f6860c06b9c72c89f7ca6aa9ea201746cf62e0e4769e805b0759ab8e70cfcb3362ca74a8d31009e851b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}