{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377320",
    "entityType": "User",
    "nonce": "0xdf3ec748027cb544cca3d7446fd63ae75ffff0552e710b269ab05fa66ef6097a",
    "signature": "0x38550ecbe17dc291e4e663e30eaedda9b5c239b1d7bd2b99f7c6ce0797dbaed265409978b62f6d12c3b92a0c6eedeeec0569ed5d89abd58aee04cb2f412c51441c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}