{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307249",
    "entityType": "User",
    "nonce": "0xb1648d8d0b67bdb4648de73357baabcc1a9a3872133904fc55bbd169ce4119ae",
    "signature": "0x7c9ebbc5b53f7c4385d4728b1dcbd9499ed1a4d461cc4530166c53f4b1b57cc97b3cbcb1a05f55c9d87d8d0191426dcedcbe6a09057babb1ce8a16163c0b42531b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}