{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "662401989",
    "entityType": "User",
    "nonce": "0x263298e669352d37decc418632d7f3f915fc66dd86f0d27141e02827a34fbde1",
    "signature": "0xd40bf7c652dc4b7c93488371a0957727eb86c6417eb212db799a87f7c4371b39740f661ef9908e1a7391243fc411cdf4e8f5e3f6429f7237c47e0a78d879d5e41c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}