{
  "manageEntity": {
    "action": "Update",
    "entityId": "223267353",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f45fc3f58f9bb3ea80ac8d4164c915d66212a587d96239cd64fc541b2063bae",
    "signature": "0x82965a3ec926c07a38b83a097343bf4c7d9c200b618fee69eff2f895fb32615e55e646dd4d2a7186ccd75e8f21d4544520e92473a1376a9a013a5ddaef0468251b",
    "signer": "0xF0374bD89da86B3f1da227b1143d70b771354Bc7",
    "userId": "223267353"
  }
}