{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661577095",
    "entityType": "User",
    "nonce": "0xcd3b54df511add2a24ead33ca4137466862dc7f8c25588bf2da810f23759fba7",
    "signature": "0x4b9536e35a84d7a0859424d53f339c8b490333fcdd9c76cfbbc44b3cd8b113fb2f9310eea17cea0876312bdfa5445ecec76849d03112e87eb8ef29d12d2db5281b",
    "signer": "0xEc459cE202405c4e9a920a077bc61044E4541ADE",
    "userId": "753584533"
  }
}