{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "878608020",
    "entityType": "User",
    "nonce": "0xf093ce269b7aaab234b51a833879d94d6a9fa2c812df97024d49f5777c69cba4",
    "signature": "0x59bc1a4bffa3c7c62c4eb6ac21cf56fc3acd4342143cf1801a96ebbef8d039b55e72f3ec477deb4da65c9337d771dfb42e2ec3485e4daa31905fe37070c3e9a51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}